What is PDF Verified?

PDF Verified (pdfverified.com) is an online platform to sign, stamp and verify PDF documents. You can send a document for legally binding electronic signatures, add a digital rubber stamp or company seal, and let anyone confirm the finished file is authentic and unaltered through a public QR code and SHA-256 audit trail. It is pay-as-you-go with no subscription required, and eIDAS + ESIGN + UETA compliant across 190+ countries.

Is PDF Verified legally binding?

Yes. PDF Verified signatures comply with the US ESIGN Act, UETA, EU eIDAS regulation, and equivalent eSignature laws in 190+ countries. Every signed document includes a cryptographic SHA-256 fingerprint and a complete audit trail with timestamps and signer hash chain, admissible in court.

How is PDF Verified different from DocuSign?

PDF Verified offers unlimited documents on the $15 Business plan with REST API included. DocuSign charges $40+/user for Business and gates the API behind a $720/month add-on. PDF Verified also includes unique features: public QR verification page on every signed PDF, eStamp designer, AI field auto-detection, and mobile-first signing without requiring an app.

Can I use PDF Verified without a subscription?

Yes. The pay-as-you-go option lets you sign or send one document or envelope for $1.50 without a monthly subscription. Monthly paid plans include a 7-day free trial.

Which file types can I sign with PDF Verified?

Upload PDF, DOCX, TXT, PNG or JPG files. Non-PDF formats are automatically converted to PDF on upload so signers always receive a clean signing-ready document.

How do recipients verify a signed document is authentic?

Every signed PDF includes a QR code on every page. Anyone, even without a PDF Verified account, can scan it to land on a public verification page showing the document status, completion date, SHA-256 fingerprint, and tamper-evidence proof.

Does PDF Verified work on mobile?

Yes, PDF Verified is mobile-first by design. The signing portal uses a native bottom-sheet pattern with touch-optimized canvas signing, sticky CTAs in the thumb zone, and 44px+ touch targets following Apple Human Interface Guidelines. No app download required.

Can I add a company stamp or seal to a document?

Yes. PDF Verified includes a stamp designer for company seals, official seals, approval stamps (APPROVED, PAID, RECEIVED), date stamps, and certified-true-copy marks. Place a stamp on any document like a signature field. On Business plans, the verified stamp library adds auto-incrementing serial numbers, locked metadata, workspace sharing, revocation, and a public QR verification link for every stamp applied.

How do I verify a stamp is genuine?

Each stamp PDF Verified applies mints a unique verification token at /verify-stamp/:token. Scan the stamp's QR code or open the link from the document's audit certificate to see the stamp's name, serial number, the document it was applied to, and whether it has been revoked, so anyone can confirm a company seal or approval stamp is authentic and current.

How do I verify a signature on a PDF is real?

Open the verification page at pdfverified.com/verify and scan the QR code on the signed PDF, paste the verification code, or upload the file. PDF Verified recomputes the document's SHA-256 fingerprint and compares it against the sealed value, if a single byte changed since signing, verification fails. You also see every signer, their timestamps, and the full tamper-evident audit trail. No account is required to verify.

How do I add a digital stamp to a PDF online?

Upload your PDF, open the editor, add a Stamp field, and pick a stamp from your library, a company seal, an APPROVED or PAID approval stamp, a date stamp, or a certified-true-copy mark. The stamp is baked into the sealed PDF with an optional auto-incrementing serial number and a QR code that links to its public verification page. No printer, ink pad, or scanner needed.

Can PDF Verified check if a PDF has been edited?

Yes. PDF Verified can recompute the SHA-256 fingerprint of a signed PDF and compare it with the fingerprint sealed at completion. If the file was edited after signing, the fingerprint changes and verification fails.

Does PDF Verified include a certificate of completion?

Yes. Completed documents include an audit certificate, also called a certificate of completion, with signer identities, timestamps, IP records, document fingerprint, verification status, and the event history needed for legal review.

Does PDF Verified include an eSignature API?

Yes. Business plans include a REST API and webhooks for sending documents, embedding signing, applying stamps, checking status, and building automated signing workflows.

Can I create a company chop or official seal online?

Yes. PDF Verified includes editable company seal, company chop, official seal, date stamp, and approval stamp templates. Verified stamps can include serial numbers, locked metadata, revocation, and a public QR verification page.

What is the best DocuSign alternative for stamps, seals, and verification?

PDF Verified is built for teams that need more than basic eSignature: public QR verification, PDF authenticity checks, serialized stamps, company seals, audit certificates, and pay-as-you-go signing from $1.50.

How to add a company stamp to a PDF

You can add a company stamp to a PDF entirely online, no printer, no ink pad, no scanner. Design a round company seal, an official seal, or an approval stamp such as APPROVED or PAID, place it exactly where you want on the page, and download the stamped PDF. Designing is free; downloading a stamp is $1.50 pay-as-you-go, or free on any paid plan. Unlike a photographed rubber stamp, a PDF Verified stamp can carry a serial number and a public QR verification link, so anyone can confirm it is genuine.

Make a company stamp →

Design your company stamp or seal now. Round seals, dated stamps and approval marks, with a date that fills itself in and a serial number that never repeats. Free to design, and it goes straight onto a PDF, a Word file or an Excel sheet.

Signature & date, Signature
Signature, name & title, Signature
Approved & signed, Signature
Received & signed, Signature

How to add a company stamp to a PDF, step by step

Design your stamp (or upload one), Open the PDF Verified stamp maker, choose a round seal, oval or rectangle, and type your company name, registration number and any wording. Prefer an existing stamp? Upload a transparent PNG of your current rubber stamp instead.
Place it on your PDF, Upload the PDF, then drag the stamp onto the page and resize it so it sits neatly over a signature block, letterhead or approval area. Add today’s date if you need a dated stamp.
Download the stamped PDF, Export the stamped document. Optionally turn on a serial number and a public QR verification link so the stamp can be checked later. No printing, no scanning, done in seconds.

What you get

No physical rubber stamp, ink pad, printer or scanner required.
Round company seals, official seals, notary-style stamps, and text stamps (APPROVED, PAID, RECEIVED, CONFIDENTIAL).
Transparent PNG export so the stamp sits cleanly over any background.
Optional serial number + public QR verification, a copied image cannot fake it.
Free to design; $1.50 to download a stamp, or unlimited on a paid plan.

Frequently asked questions

How do I add a company stamp to a PDF for free?

Designing your stamp in the PDF Verified stamp maker is free. You can also export a transparent PNG and place it yourself. Downloading a finished stamp is $1.50 pay-as-you-go, or free and unlimited on any paid plan, cheaper than ordering a physical rubber stamp.

Can I upload my existing rubber stamp?

Yes. Save your current stamp as a transparent PNG and upload it, then position it on your PDF. For a verifiable version, recreate it in the maker so it can carry a serial number and QR verification.

Will the stamp have a white box behind it?

No. Stamps export as transparent PNGs cropped tight to the ink, so they sit cleanly over letterhead, signatures or coloured backgrounds.

Is a digital company stamp on a PDF legally valid?

In most jurisdictions a contract is valid on signature alone and a seal is evidentiary, but many markets (Kenya, Nigeria, India, the UAE, China) expect a company stamp on commercial documents. A PDF Verified stamp carries the same visual authority plus an audit trail and public verification a physical stamp cannot offer.

Can I stamp every page of the PDF?

Yes. Place the stamp on one page or apply it across the whole document, then download the stamped file.

How do recipients know the stamp is genuine?

Turn on serialization and every stamp gets a unique serial and a public QR link. Scanning it shows the stamp name, serial, the document it was applied to, and whether it has been revoked.

What PDF Verified is, and what it is not

A stamp identifies who issued a document. It is evidence rather than a formality that makes a document binding on its own, and it should only ever be made and applied for a business or an office you are authorised to act for: a mark that imitates another organisation in order to pass a document off as theirs is forgery in most places. Where a registry, a bank or a counterparty requires a particular form of seal, that requirement comes from them.

PDF Verified is a tool for preparing, signing, stamping and checking documents. It is not a law firm, a compliance service or a forensic examiner, and nothing here is legal, financial or compliance advice. Requirements differ by country, by document type and by the party asking, so check what applies to your document before you rely on it, and take advice where the document matters. You are responsible for the documents you create, sign and send, and for having the authority to do so: signing or stamping in somebody else name, or as an organisation you do not represent, is forgery whatever tool is used. To the extent the law allows, we accept no liability for how a document made with this tool is used or relied on. The full position is in our terms of service.